The Battery That Glows at 2,400°C and Costs 10x Less Than Lithium| S4E10

Solar and wind are now cheaper than fossil fuels, but the transition has a problem nobody has fully solved: storage. The sun doesn't always shine, and the wind doesn't always blow, and we still can't bank clean energy at the scale the grid needs. That gap is the defining challenge of this decade.

This episode looks at Fourth Power, a Boston company storing energy as heat in carbon blocks heated to 2,400 degrees Celsius, then converting it back to electricity at a fraction of the cost of lithium-ion.

Backed by Bill Gates, Munich Re, and DCVC, the company is bringing its first demonstration system online this year. We dig into why storage is the real bottleneck, what makes a new technology bankable, and what it takes to get a breakthrough out of the lab and onto the grid.

Our Guest is Christina Belsito, Head of Corporate Growth at Fourth Power.